A retailer is deciding how many of a certain product to stock. The historical probability distribution of sales for this product is 0 units, 0.1; 10 unit, 0.2; 20 units, 0.3, and 30 units, 0.4. The product costs $18 per unit and sells for $40 per unit. Any unsold units will be discarded. The best EMV for this case is

a.

none of the answers is correct

b.

$260 profit

c.

$414 profit

d.

$200 profit

e.

$336 profit